Propagation Models for TETRA Direct Mode Operation
نویسندگان
چکیده
In the paper, we gave after a brief overview of free space, Bacon and CEPT SE21 propagation models, mentioned in the TETRA Direct Mode Operation (DMO) standard, the comparison of the path losses, calculated by two-ray and multi-wall models and pass losses, obtained by field measurement campaign. We found out, that the tworay model is suitable for fast estimation of the TETRA DMO signal coverage in open flat area, while the multi-wall model, taking into account the attenuation of walls between transmitter and receiver, gives good estimate of the signal levels for indoor applications. Key-Words: propagation, path loss, TETRA Direct Mode Operation, two-ray model, multi-wall model, radio signal coverage
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